1000A - 9999Z
There are many great four digit tubes such as the 7025, 6550, 5654 and 7868. These tubes tend to be high-end versions of standard tubes or variants of standard tubes though there are plenty that just exist on their own.
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On Sale
New Matched Quad (4) Electro-Harmonix 6550 Ceramic Vacuum Tubes
Electro-Harmonix
Now: $248.42Was: $276.02New Plate Current Matched Quad of Electro-Harmonix 6550 Ceramic Vacuum Tubes The 6550EH is one of the finest new production tubes for any amp using 6550 or KT88. The 6550EH offers the maximum power of any 6550 with the linearity guitar and bass players...Now: $248.42Was: $276.02 -
New Matched Octet (8) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$789.38New Plate Current Matched Octet of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more...$789.38 -
New Matched Sextet (6) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$595.07New Plate Current Matched Sextet of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the...$595.07 -
New Matched Quad (4) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$397.52New Plate Current Matched Quad of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more...$397.52 -
New Matched Pair (2) Shuguang Treasure KT88-Z Smoked Vacuum Tubes
Shuguang
$199.05New Plate Current Matched Pair of Shuguang Treasure KT88-Z Smoked Vacuum Tubes The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more...$199.05 -
New Shuguang Treasure KT88-Z Smoked Vacuum Tube
Shuguang
$94.42New Plate Current Tested Shuguang Treasure KT88-Z Smoked Vacuum Tube The KT88-Z features special carbon sprayed smoked glass which helps electrons flow more smoothly and reduces noise. As a part of the treasure series, this is one of the more high-end...$94.42 -
New Matched Pair (2) Telefunken KT88 Vacuum Tubes
Telefunken
$242.95New Factory Matched Pair of Telefunken KT88 Vacuum Tubes Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or hifi...$242.95 -
New Telefunken KT88 Vacuum Tube
Telefunken
$115.03New Factory Tested Telefunken KT88 Vacuum Tube Introduced in 1956 by GEC, the KT88 was the higher-rated answer to the 6550. The Telefunken KT88 is an incredibly durable tube that can handle taxing applications whether it is guitar or hifi amplification...$115.03 -
New Matched Quad (4) Telefunken 6550 Vacuum Tubes
Telefunken
$428.41New Factory Matched Quad of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar amplifiers...$428.41 -
New Matched Pair (2) Telefunken 6550 Vacuum Tubes
Telefunken
$214.49New Factory Matched Pair of Telefunken 6550 Vacuum Tubes An excellent power tube Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar amplifiers...$214.49 -
New Telefunken 6550 Vacuum Tube
Telefunken
$101.67New Factory Tested Telefunken 6550 Vacuum Tube An excellent power tube by Telefunken fit for classic amps such as Ampeg, capable of delivering a full 35-watt output. This is the ideal tube for warm tones with smooth overdrive in guitar amplifiers. They...$101.67 -
New Matched Octet (8) Psvane KT88C Hifi Vacuum Tubes
Psvane
$500.86New Plate Current Matched Octet of Psvane KT88C Hifi (6550) Vacuum Tubes As one of the most prominent audiophile vacuum tube manufacturers, Psvane’s designs have established a benchmark for clean and accurate sound reproduction. Along with a...$500.86